Aviation Abbreviations Glossary

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Term Main definition
UDC
Upper Deck Cargo
UD
Upper Deck
UD
Document Unit ("Unit? Documentaire")
UCS
User Certifiable Software
UART
Universal Asynchronous Receiver Transmitter
UADF
User Application Definition File
UAC
Upper Area Control Centre
U/S
Unserviceable
U/FLOOR
Underfloor
TYPPLE
Typical Phone Power Level
TYP
Typical
TX
Transmission (TCAS to Transponder)
TWY
Taxiway
TWR
Tower
TWLU
Terminal Wireless LAN Unit
TW
Twisted
TVOR
Short Range VOR
TVOR
Very High Frequency Terminal Omnirange Station
TVC
Turbine Vane Cooling
TVBC
Turbine Vane and Blade Cooling
TV
Television
TURB
Turbulence; Turbulent
TURB
Turbine
TU
Tapping Unit
TTS
Trim Tank System